Heatiator owner manual E. Use of Flex Vent, Heatilator GDST3831I 2127-900Rev. K 7/12

E. Use of Flex Vent

The flex vent must be supported with the spacing between support intervals not exceeding 4 feet, with no more than 1/2 inch sag between supports.

3 in. CLEARANCE TERMINATION CAP

A support is required at each change in venting direction, and in any location where it is necessary to maintain the necessary clearance to combustibles. A simple “up and out” installation (Figure 7.3) requires only enough sup- port to maintain the necessary clearance to combustibles. However, the vent attachment point and the firestop loca- tion are considered to be supports.

FLEX VENT

Figure 7.3

1 in. CLEARANCE

Heatilator • GDST3831I • 2127-900 Rev. K • 7/12 25